What is he doing ? - CONTEST!

การสนทนาใน 'Drag Racing' เริ่มโดย Dr. Jeff Harper, 27 กุมภาพันธ์ 2009

  1. Dr. Jeff Harper

    Dr. Jeff Harper New Member Racer

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    O.K., let's see how good you drag racers are at knowing your sport. I was at the NHRA Arizona Nationals last week-end in the USA and took this movie of a crew member doing "something" on the track.

    I will give a free racing t-shirt to the first person who can tell me exactly what this man is doing. I know the answer because I asked him!

    The movie is a little shaky because a fat woman was jumping up and down in the stands behind me!

    Good luck.
     
  2. Dr. Jeff Harper

    Dr. Jeff Harper New Member Racer

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    Well . . . . . . after a month . . . nobody knew what this guy was doing.

    Here is the answer: the crew member is using a device to test how sticky the track is at various points on the drag strip. This is a new practice in The States at the national event level. The device assigns a numerical value to the degree of track stickiness so that the crew chief can determine how much clutch slippage to dial in. This is a process of tuning the race car to the particular track they are racing on . . . and with top fuel dragsters and nitro funny cars now making 8000 horsepower . . . . it is very important.
     

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